//
//  ClassB.swift
//  ClassKvc
//
//  Created by lanou on 16/10/27.
//  Copyright (c) 2016年 lanou. All rights reserved.
//

import Foundation

class ClassB: NSObject {
   
}
extension ClassB:HouseWork{
    func wash() {
         println("wash")
    }
    func care() {
      println("care")
    }
}